A rectangular loop of wire that can rotate about an axis thr…

A rectangular loop of wire that can rotate about an axis through its center is placed between the poles of a magnet in a magnetic field with a strength of 0.40 T, as shown in the figure. The length of the loop  L is 0.16 m and its width  w is 0.040 m. What is the magnetic flux through the loop when the plane of the loop makes an angle of 60° with the magnetic field?

A bar magnet is pushed through a coil of wire of cross-secti…

A bar magnet is pushed through a coil of wire of cross-sectional area 0.020 m 2 as shown in the figure. The coil has seven turns, and the rate of change of the strength of the magnetic field in it due to the motion of the bar magnet is 0.040 T/s. What is the magnitude of the induced emf in that coil of wire?

A uniform magnetic field passes through a horizontal circula…

A uniform magnetic field passes through a horizontal circular wire loop at an angle  16.2°  from the normal to the plane of the loop. The magnitude of the magnetic field is [B]  T , and the radius of the wire loop is [r]  m . Find the magnetic flux through the loop.

A charged particle is moving with speed v perpendicular to a…

A charged particle is moving with speed v perpendicular to a uniform magnetic field. A second identical charged particle is moving with speed 2v perpendicular to the same magnetic field. The frequency of revolution of the first particle is f. The frequency of revolution of the second particle is